This article presents an experimental study of high‐temperature hardness and wear resistance of three cobalt‐based Tribaloy alloys. They are two hypereutectic Tribaloy alloys, designated as T‐400 and T‐400C, and one hypoeutectic Tribaloy alloy, designated as T‐401. T‐400 is a conventional wear‐resistant Tribaloy alloy while T‐400C and T‐401 are newly developed with improved corrosion/oxidation resistance or/and ductility, respectively. A micro hardness tester equipped with a hot stage is employed to perform hardness measurement on individual phases of the alloys at elevated temperatures. The wear resistance of these alloys is evaluated using a pin‐on‐disc tribometer equipped with a furnace having temperature capacity of 450C. The experimental results are integrated and the correlations between microstructure, hardness, wear resistance and temperature for these alloys are discussed.